Heat dissipation device for solar photovoltaic module

Abstract

The invention discloses a heat dissipation device for a solar photovoltaic module in the field of photovoltaic modules, which comprises a photovoltaic panel and a back plate arranged on the inner side of the photovoltaic panel, and further comprises a plurality of heat dissipation components, a moving component, a water tank component, a sealing component, an extrusion component and the like, the multiple heat dissipation assemblies are evenly installed on the bottom face of the heat conduction plate at intervals, the bottoms of the heat dissipation assemblies are connected with two water absorption belts which absorb water through the capillary action, a frame plate is fixedly installed on the outer sides of the water absorption belts, the moving assembly is connected to the bottom face of the back plate, and the moving assembly and the frame plate are fixed to drive the frame plate to move. The outer side of the water tank assembly is connected with a plurality of connecting plates, the connecting plates are fixedly connected with the back plate, the top surface of the water tank assembly is provided with a plurality of through holes for the water absorption belts and the frame plates to penetrate through, and the problem that the power generation efficiency is affected by high temperature due to low heat dissipation efficiency of the photovoltaic assembly is solved.

Description

A heat dissipation device for solar photovoltaic modules Technical Field

[0001] This invention relates to the field of photovoltaic module technology, and in particular to a heat dissipation device for solar photovoltaic modules. Background Technology

[0002] Solar photovoltaic modules are the core components of solar power generation systems. Their power generation efficiency is closely related to the operating temperature. When working in a high-temperature outdoor environment for a long time, the surface temperature of the photovoltaic modules will rise significantly. Excessive temperature will not only greatly reduce the power generation efficiency, but also accelerate the aging of the internal components of the modules and shorten the service life of the modules.

[0003] Traditional heat dissipation devices for solar photovoltaic modules mostly adopt passive heat dissipation structures. Some devices rely solely on the heat conduction of heat sinks to achieve heat dissipation, resulting in limited heat dissipation efficiency and difficulty in meeting the rapid cooling requirements of photovoltaic modules under high-temperature environments. While some active heat dissipation devices can improve heat dissipation through devices such as fans, they require additional electrical energy to operate, increasing operating costs. Furthermore, they cannot achieve rapid cooling under high-temperature conditions, making it difficult to balance heat dissipation efficiency, energy saving, and automatic adaptability. They also fail to fully address the problems of efficiency reduction and shortened lifespan caused by high-temperature operation of photovoltaic modules, which is detrimental to user experience. Therefore, those skilled in the art provide a heat dissipation device for solar photovoltaic modules to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a heat dissipation device for solar photovoltaic modules, in order to solve the problems of traditional heat dissipation devices being unable to efficiently cool down at high temperatures and having poor energy-saving effects.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation device for solar photovoltaic modules, comprising a photovoltaic panel and a back plate installed inside the photovoltaic panel, wherein a heat-conducting plate is integrally formed on the bottom of the back plate, and further comprising: multiple heat dissipation components evenly spaced and installed on the bottom surface of the heat-conducting plate, wherein the bottom of each heat dissipation component is connected to two water-absorbing strips that absorb water through capillary action, and a frame plate is fixedly installed on the outer side of each water-absorbing strip; a moving component connected to the bottom surface of the back plate, wherein the moving component is fixed to the frame plate to drive the frame plate to move; a water tank assembly having multiple connecting plates connected to its outer side, wherein the connecting plates are fixedly connected to the back plate, and the top surface of the water tank assembly has multiple perforations for the water-absorbing strips and the frame plate to pass through; a sealing component sleeved on the outer side of the frame plate to seal the gap between the frame plate and the perforations; and a squeezing component fixedly installed on the bottom surface of the back plate, wherein the squeezing component absorbs heat and expands to squeeze the moving component downward, causing the water-absorbing strips to extend into the water tank assembly to absorb water.

[0006] As a further description of the heat dissipation device for a solar photovoltaic module described above: the heat dissipation component includes: heat dissipation fins, fixedly installed at the bottom of a heat-conducting plate, with a main absorbent cotton bonded to the inner side of the heat dissipation fins and adhering to the inner wall of the heat dissipation fins, and multiple heat dissipation holes for ventilation evenly opened on the surface of the heat dissipation fins; a water-guiding cotton, connected between two adjacent main absorbent cottons, with multiple auxiliary absorbent cottons attached to the outer wall of the heat dissipation fins connected to the outer side of the water-guiding cotton; and a water-absorbing strip fixedly connected to the bottom of the water-guiding cotton and the main absorbent cotton, for supplying water to the water-guiding cotton and the main absorbent cotton through capillary effect.

[0007] As a further description of the heat dissipation device for a solar photovoltaic module described above: the movable component includes: multiple telescopic rods fixedly installed at the bottom of a back plate, with a lifting frame fixedly installed at the lower end of the multiple telescopic rods, and elastic elements arranged around the outside of the telescopic rods; multiple connecting frames located inside the lifting frame, with connecting rods fixedly connected between adjacent connecting frames, and a support plate fixedly connected between the connecting frame located at the inner corner of the lifting frame and the lifting frame, and the frame plate being fixed to the connecting frame.

[0008] As a further description of the heat dissipation device for a solar photovoltaic module mentioned above: the elastic element is specifically a first spring, the upper end of the first spring is fixedly installed on the bottom surface of the back plate, and the lower end of the first spring is fixedly installed on the top surface of the lifting frame.

[0009] As a further description of the heat dissipation device for a solar photovoltaic module as described above: the extrusion assembly includes: multiple airbags fixedly installed at the bottom of the back plate, the airbags being made of hollow rubber material and used to expand as the back plate heats up; multiple limiting plates fixedly installed at the bottom of the back plate; and multiple extrusion blocks fixedly installed on the top surface of the lifting frame, wherein the extrusion blocks are vertically aligned with the airbags and the extrusion blocks abut against the airbags.

[0010] As a further description of a heat dissipation device for a solar photovoltaic module as described above: the limiting plate and the heat-conducting plate together surround the airbag, which is used to make the airbag expand downward.

[0011] As a further description of the heat dissipation device for a solar photovoltaic module mentioned above: the sealing assembly includes: a blocking plate, which is slidably installed on the outside of the frame plate, and a second spring is fixedly installed on the top surface of the blocking plate, with the upper end of the second spring fixedly installed on the bottom surface of the connecting frame.

[0012] As a further description of the heat dissipation device for a solar photovoltaic module mentioned above: a sealing gasket is adhered to the bottom surface of the blocking plate, and the sealing gasket is made of rubber.

[0013] As a further description of the heat dissipation device for a solar photovoltaic module mentioned above: the water tank assembly includes: a tank body, which is fixedly installed at one end of a connecting plate, and a cover plate is detachably installed on the top of the tank body. A plurality of perforations are opened on the top surface of the cover plate, and the perforations correspond one-to-one with the vertical positions of the frame plate; and a connecting pipe, which is connected to one side of the tank body for supplying water into the tank body.

[0014] As a further description of the heat dissipation device for solar photovoltaic modules mentioned above: a support part for supporting the back plate and the water tank module is provided below the back plate. The support part includes: a base plate disposed on the mounting surface, a plurality of support blocks and pillars fixedly installed on the top surface of the base plate, the pillars being fixed to the bottom surface of the connecting plate, and the support blocks being fixed to the bottom surface of the housing.

[0015] In summary, due to the adoption of the above-mentioned heat dissipation device for solar photovoltaic modules, the beneficial effects of this invention are as follows: This heat dissipation device for solar photovoltaic modules effectively solves the heat dissipation problem during photovoltaic panel operation. It conducts heat from the photovoltaic panel to the backsheet, and then the heat is conducted to the heat dissipation component below by a heat-conducting plate integrally formed at the bottom of the backsheet. When the temperature of the photovoltaic panel, backsheet, and heat-conducting plate rises, the squeezing component expands due to heat absorption, pushing the moving component downwards. Since the moving component is fixedly connected to the frame plate on the outside of the water-absorbing belt, it drives the frame plate and the bottom water-absorbing belt to move downwards synchronously, allowing the water-absorbing belt to extend into the water tank assembly; the water tank assembly is connected by a connecting plate... Fixedly connected to the back panel to ensure stable installation, the water-absorbing belt absorbs moisture from the water tank assembly through capillary action and transports it to the heat dissipation assembly. Through moisture evaporation, the heat dissipation efficiency of the heat dissipation assembly is greatly improved, thereby quickly reducing the temperature of the heat conduction plate, back panel, and photovoltaic panel, ensuring the power generation efficiency of the photovoltaic panel. At the same time, the sealing assembly sleeved on the outside of the frame plate can effectively seal the gap between the frame plate and the perforation of the water tank assembly, reducing the evaporation and leakage of moisture in the water tank assembly, achieving water conservation. The entire device does not require additional active power, and relies on temperature changes to achieve adaptive heat dissipation. The structure is stable and reliable, taking into account the dual requirements of efficient heat dissipation and water conservation. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 is a schematic diagram of the bottom structure of the present invention; Figure 4 is a schematic diagram of the structure of the water tank assembly of the present invention; Figure 5 is a schematic diagram of the frame structure of the present invention; Figure 6 is an enlarged view of structure A in Figure 3; Figure 7 is an enlarged view of structure B in Figure 1.

[0017] Legend: 10. Photovoltaic panel; 11. Back panel; 12. Heat-conducting plate; 20. Heat dissipation component; 201. Heat dissipation fins; 202. Main absorbent cotton; 203. Water-conducting cotton; 204. Auxiliary absorbent cotton; 205. Heat dissipation hole; 21. Water-absorbing strip; 22. Frame plate; 30. Moving component; 301. Telescopic rod; 302. Lifting frame; 303. First spring; 304. Connecting frame; 305. Support plate; 306 40. Connecting rod; 40. Water tank assembly; 401. Tank body; 402. Cover plate; 403. Connecting pipe; 41. Connecting plate; 42. Perforation; 50. Sealing assembly; 501. Blocking plate; 502. Second spring; 503. Sealing gasket; 60. Support part; 601. Base plate; 602. Support block; 603. Column; 70. Extrusion assembly; 701. Airbag; 702. Limiting plate; 703. Extrusion block. Detailed Implementation

[0018] The following will describe in detail, with reference to the accompanying drawings of the embodiments of the present invention, a heat dissipation device for a solar photovoltaic module. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] As shown in Figures 1-7, the present invention provides a heat dissipation device for solar photovoltaic modules, comprising a photovoltaic panel 10 and a backplate 11 installed inside the photovoltaic panel 10. The photovoltaic panel 10 is a monocrystalline silicon high-efficiency photovoltaic panel. A heat-conducting plate 12 is integrally formed on the bottom of the backplate 11. The device also includes multiple heat dissipation components 20, a moving component 30, a water tank component 40, a sealing component 50, and an extrusion component 70. The multiple heat dissipation components 20 are evenly spaced and installed on the bottom surface of the heat-conducting plate 12. Two water-absorbing strips 21, which absorb water through capillary action, are connected to the bottom of each heat dissipation component 20. The water-absorbing strips 21 are woven from high-molecular-weight absorbent fibers, possessing strong capillary water absorption capacity and water retention performance. A frame plate 22 is fixedly installed on the outside of the water-absorbing strips 21 to fix and limit their position, preventing the water-absorbing strips 21 from shifting during movement. To prevent displacement or entanglement, the moving component 30 is connected to the bottom surface of the back plate 11 and fixed to the frame plate 22 to drive the frame plate 22 to move. Multiple connecting plates 41 are connected to the outside of the water tank assembly 40. The connecting plates 41 are fixedly connected to the back plate 11 to ensure that the water tank assembly 40 is firmly installed and remains relatively stationary with the back plate 11. Multiple perforations 42 are opened on the top surface of the water tank assembly 40 for the water suction belt 21 and the frame plate 22 to pass through. The sealing component 50 is sleeved on the outside of the frame plate 22 to seal the gap between the frame plate 22 and the perforations 42 to prevent the water in the water tank assembly 40 from evaporating and losing. The squeezing component 70 is fixedly installed on the bottom surface of the back plate 11. The squeezing component 70 absorbs heat and expands to squeeze the moving component 30 to move downward, so that the water suction belt 21 extends into the water tank assembly 40 to absorb water, thereby realizing the automatic triggering of the efficient heat dissipation function.

[0020] During the heating process of the photovoltaic panel 10 and the heat-conducting plate 12, the internal air pressure of the extrusion component 70 increases and expands. The expanded extrusion component 70 generates a downward thrust, which pushes the moving component 30 to move downward in the vertical direction. This causes the lower ends of the frame plate 22 and the water-absorbing belt 21 to extend into the water tank component 40 simultaneously. The water-absorbing belt 21 continuously supplies water to the heat dissipation component 20 through capillary action. When the water evaporates on the surface of the heat dissipation component 20, it absorbs a large amount of heat, thereby greatly improving the heat dissipation efficiency of the heat dissipation component 20 through evaporative cooling. This rapidly reduces the temperature of the heat-conducting plate 12, the back plate 11, and the photovoltaic panel 10, ensuring that the photovoltaic panel 10 is within a suitable operating temperature range and guaranteeing its stable power generation efficiency.

[0021] In one embodiment, as shown in Figures 3 and 6, the heat dissipation assembly 20 specifically includes heat dissipation fins 201 and water-wicking cotton 203. The heat dissipation fins 201 are fixedly installed on the bottom of the heat-conducting plate 12 by thermally conductive silicone adhesive. A main absorbent cotton 202, which adheres to the inner wall of the heat dissipation fins 201, is bonded to the inner side of the heat dissipation fins 201. The main absorbent cotton 202 is made of high-density hydrophilic sponge, possessing excellent water absorption and conduction properties, and can quickly and evenly distribute the water transported by the absorbent strip 21 onto the inner wall of the heat dissipation fins 201. Multiple heat dissipation holes 205 for ventilation are evenly distributed on the surface of the heat dissipation fins 201. The water-wicking cotton 203 is connected between two adjacent main absorbent cotton 202s. Multiple auxiliary absorbent cotton 204s, which adhere to the outer wall of the heat dissipation fins 201, are connected to the outer side of the water-wicking cotton 203. The absorbent cotton 204 is made of the same material as the main absorbent cotton 202 and fits tightly against the outer wall of the heat dissipation fins 201 to expand the coverage area of ​​water. The absorbent tape 21 is fixedly connected to the bottom of the water-conducting cotton 203 and the main absorbent cotton 202 to supply water to the water-conducting cotton 203 and the main absorbent cotton 202 through capillary effect. The absorbent tape 21, which extends into the water surface at the bottom, supplies water to the water-conducting cotton 203. The auxiliary absorbent cotton 204 absorbs water through the water-conducting cotton 203, thereby effectively dissipating heat on the outer surface of the heat dissipation fins 201 through evaporation. The water evaporation on the surface of the main absorbent cotton 202 dissipates heat on the inner surface of the heat dissipation fins 201, thereby effectively cooling the heat-conducting plate 12, and further cooling the back plate 11 and the photovoltaic panel 10. This prevents the photovoltaic panel 10 from aging or decreasing in efficiency due to high temperature and ensures the long-term stable power generation efficiency of the photovoltaic panel 10.

[0022] In one embodiment, as shown in Figures 3, 5, and 7, the movable component 30 specifically includes multiple telescopic rods 301 and multiple connecting frames 304. The multiple telescopic rods 301 are fixedly installed at the bottom of the back plate 11, and a lifting frame 302 is fixedly installed at the lower end of each telescopic rod 301. The lifting frame 302 has a rectangular frame structure, matching the size of the back plate 11, and is used to drive all connecting frames 304 to move synchronously. Elastic elements are arranged around the outer side of the telescopic rods 301. The multiple connecting frames 304 are located inside the lifting frame 302. A connecting rod 306 is fixedly connected between adjacent connecting frames 304. The connecting rod 306 enhances the overall integrity between the connecting frames 304, ensuring synchronous movement of multiple connecting frames 304 and preventing single-frame movement. When the connecting frame 304 is offset, and the connecting frame 304 located at the inner corner of the lifting frame 302 is fixedly connected to the lifting frame 302 with a support plate 305, the frame plate 22 is fixed to the connecting frame 304, and the elastic element is specifically the first spring 303. The upper end of the first spring 303 is fixedly installed on the bottom surface of the back plate 11, and the lower end of the first spring 303 is fixedly installed on the top surface of the lifting frame 302. When the lifting frame 302 moves downward, the connecting frame 304 is driven to move downward through multiple support plates 305 and connecting rods 306. The connecting frame 304 drives the lower end of the frame plate 22 and the water absorption belt 21 to move downward, ensuring that all water absorption belts 21 extend into the water surface simultaneously, ensuring that each heat dissipation component 20 can obtain sufficient water supply and thus extend into the water surface.

[0023] Specifically, the extrusion assembly 70 includes multiple airbags 701, multiple limiting plates 702, and multiple extrusion blocks 703. The multiple airbags 701 are fixedly installed at the bottom of the back plate 11. The airbags 701 are made of hollow rubber material and are used to expand as the back plate 11 heats up. The multiple limiting plates 702 are fixedly installed at the bottom of the back plate 11. The multiple extrusion blocks 703 are fixedly installed on the top surface of the lifting frame 302. The extrusion blocks 703 are vertically aligned with the airbags 701 and abut against each other. The limiting plates 702 and the heat-conducting plate 12 together surround the airbags 701, which is used to make the airbags 701 expand downward. The airbags 701 are in direct contact with the back plate 11, so that they absorb heat and expand when the back plate 11 is at high temperature, which drives the extrusion blocks 703 to move downward, thereby causing the moving assembly 30 to move downward.

[0024] In one embodiment, as shown in Figure 6, the sealing assembly 50 specifically includes a blocking plate 501, which is slidably mounted on the outside of the frame plate 22. A second spring 502 is fixedly mounted on the top surface of the blocking plate 501, and the upper end of the second spring 502 is fixedly mounted on the bottom surface of the connecting bracket 304. A sealing gasket 503 is bonded to the bottom surface of the blocking plate 501. The sealing gasket 503 is made of rubber. Under the action of the second spring 502, the blocking plate 501 causes the sealing gasket 503 to come into close contact with the top surface of the water tank assembly 40, thereby sealing the gap between the perforation 42 and the frame plate 22, preventing the cooling water in the water tank assembly 40 from evaporating and losing through the gap, reducing water consumption, and also preventing external dust and debris from entering the water tank assembly 40 through the gap and contaminating the cooling water, ensuring that the capillary water absorption effect of the water absorption belt 21 is not affected.

[0025] In one embodiment, as shown in Figure 4, the water tank assembly 40 specifically includes a tank body 401 and a connecting pipe 403. The tank body 401 is fixedly installed at one end of the connecting plate 41 and has a cuboid structure. Its capacity is set according to the size of the photovoltaic module and the heat dissipation requirements to meet the long-term heat dissipation needs. A cover plate 402 is detachably installed on the top of the tank body 401. The cover plate 402 facilitates the later opening of the tank body 401 for cleaning and maintenance. Multiple perforations 42 are opened on the top surface of the cover plate 402, and the perforations 42 correspond one-to-one with the vertical positions of the frame plate 22. The connecting pipe 403 is connected to one side of the tank body 401 for supplying water into the tank body 401. The connecting pipe 403 is connected to the water supply pipe through a solenoid valve, and the water level in the tank 401 is monitored by a water level sensor built into the tank 401. The monitoring data is sent to the microcontroller. When the water level drops, the microcontroller controls the solenoid valve to open and replenish water in the tank 401. This ensures that the water level in the tank 401 is always maintained within a suitable range. This ensures that when the frame plate 22 moves the lower end of the water suction belt 21 downward, the bottom of the water suction belt 21 can be stably immersed in the cooling water to absorb water. Water is then continuously supplied to the heat dissipation component 20 through capillary action, thereby steadily improving the heat dissipation efficiency through evaporation and avoiding a decrease in heat dissipation effect due to water shortage.

[0026] Specifically, a support part 60 is provided below the back panel 11 to support the back panel 11 and the water tank assembly 40. The support part 60 is used to support and fix the entire heat dissipation device and photovoltaic module in a preset position to ensure that the device is installed firmly and can adapt to complex outdoor environments. The support part 60 includes a base plate 601, which is set on the mounting surface. Multiple support blocks 602 and pillars 603 are fixedly installed on the top surface of the base plate 601. The pillars 603 are fixed to the bottom surface of the connecting plate 41, and the support blocks 602 are fixed to the bottom surface of the housing 401. The multiple pillars 603 provide uniform support to the back panel 11 through the connecting plate 41 to ensure that the back panel 11 is under balanced force and avoid deformation due to uneven force, which would affect the installation accuracy and heat conduction effect of the photovoltaic panel 10. The support blocks 602 provide stable support to the housing 401 to prevent the housing 401 from tilting or shaking, so as to ensure the overall structural stability of the device and adapt to complex working conditions such as outdoor wind and vibration.

[0027] Working principle: During use, when the photovoltaic panel 10 operates in a high-temperature environment, it conducts heat to the back plate 11 and the heat-conducting plate 12. Multiple heat dissipation fins 201 mounted on the bottom surface of the heat-conducting plate 12 provide passive heat dissipation, improving the device's heat dissipation efficiency. The heating of the back plate 11 causes the airbag 701 to heat up, increasing its internal air pressure. Under the constraint of the limiting plate 702 and the heat-conducting plate 12, the airbag 701 expands and presses downward against the pressing block 703, causing it to move downward. This, in turn, moves the lifting frame 302 downward. The lifting frame 302, through the support plate 305 and connecting rod 306, drives all connecting frames 304 to move downward together. The connecting frames 304 then drive the frame plate 22 and... The lower end of the water-absorbing strip 21 moves downwards, extending into the water inside the housing 401. The water wets the water-absorbing strip 21, and through capillary action, the water-conducting cotton 203, main water-absorbing cotton 202, and auxiliary water-absorbing cotton 204 absorb water. The water inside the water-conducting cotton 203, main water-absorbing cotton 202, and auxiliary water-absorbing cotton 204 evaporates and absorbs heat at high temperatures, effectively reducing the temperature of the heat dissipation fins 201 and significantly improving the heat dissipation effect of the device. Thus, when the temperature is high, the heat dissipation effect of the heat dissipation fins 201 is automatically improved, thereby improving the heat dissipation effect of the heat-conducting plate 12, back plate 11, and photovoltaic panel 10. When the airbag 701 is not inflated, the lower end of the frame plate 22 passes through the perforation 42. However, the water inside the casing 401 is not in contact with the water. At this time, under the elastic force of the second spring 502, the blocking plate 501 pushes the sealing gasket 503 to press tightly against the top surface of the cover plate 402. The sealing gasket 503 achieves a sealing effect, preventing water inside the casing 401 from leaking out through the perforation 42. When the frame plate 22 moves downward, the second spring 502 is compressed. At this time, the blocking plate 501 can still push the sealing gasket 503 to press tightly against the top surface of the cover plate 402, thereby preventing water waste. By installing a water level sensor inside the casing 401 and connecting the solenoid valve to the connecting pipe 403, the microcontroller determines the water level inside the casing 401 through the water level sensor and controls the opening and closing of the solenoid valve to control the water level inside the casing 401. Water is replenished inside the 01 compartment to maintain the water level in the housing 401 within an appropriate range. In low ambient temperatures such as at night, the air pressure inside the airbag 701 recovers, and under the action of the first spring 303, the lifting frame 302 moves upward. This, in turn, drives the connecting frame 304 upward through the support plate 305 and the connecting rod 306. The connecting frame 304 drives the frame plate 22 and the water absorption belt 21 to move slightly upward, so that the frame plate 22 blocks the perforation 42. At this time, the water absorption belt 21 does not come into contact with the water inside the housing 401, thus achieving a water-saving effect. The temperature changes of the photovoltaic panel 10 and the back panel 11 control the change in the height position of the frame plate 22 and the water absorption belt 21, thereby adjusting the heat dissipation efficiency of the device.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A heat dissipation device for a solar photovoltaic module, comprising a photovoltaic panel (10) and a back plate (11) installed inside the photovoltaic panel (10), wherein a heat-conducting plate (12) is integrally formed on the bottom of the back plate (11), characterized in that, It also includes: multiple heat dissipation components (20), evenly spaced and installed on the bottom surface of the heat-conducting plate (12), the bottom of each heat dissipation component (20) is connected to two water-absorbing strips (21) that absorb water through capillary action, and a frame plate (22) is fixedly installed on the outside of each water-absorbing strip (21); a moving component (30), connected to the bottom surface of the back plate (11), the moving component (30) is fixed to the frame plate (22) to drive the frame plate (22) to move; a water tank assembly (40), with multiple connecting plates (41) connected to the outside, the connecting plates (41) being... 1) Fixed connection with the back plate (11), the top surface of the water tank assembly (40) is provided with a plurality of perforations (42) for the water absorption belt (21) and the frame plate (22) to pass through; sealing assembly (50) is sleeved on the outside of the frame plate (22) to seal the gap between the frame plate (22) and the perforations (42); extrusion assembly (70) is fixedly installed on the bottom surface of the back plate (11), the extrusion assembly (70) absorbs heat and expands to extrude the moving assembly (30) downward, so that the water absorption belt (21) extends into the water tank assembly (40) to absorb water.

2. The heat dissipation device for a solar photovoltaic module according to claim 1, characterized in that: The heat dissipation assembly (20) includes: heat dissipation fins (201), which are fixedly installed at the bottom of the heat conduction plate (12). The inner side of the heat dissipation fins (201) is bonded with a main absorbent cotton (202) that is attached to the inner wall of the heat dissipation fins (201). The surface of the heat dissipation fins (201) is evenly provided with a plurality of heat dissipation holes (205) for ventilation; water-wicking cotton (203), which is connected between two adjacent main absorbent cottons (202). The outer side of the water-wicking cotton (203) is connected with a plurality of auxiliary absorbent cottons (204) that are attached to the outer wall of the heat dissipation fins (201). The water-absorbing strip (21) is fixedly connected to the bottom of the water-wicking cotton (203) and the main absorbent cotton (202) for supplying water to the water-wicking cotton (203) and the main absorbent cotton (202) through capillary effect.

3. The heat dissipation device for a solar photovoltaic module according to claim 1, characterized in that: The moving component (30) includes: multiple telescopic rods (301) fixedly installed at the bottom of the back plate (11), with a lifting frame (302) fixedly installed at the lower end of the multiple telescopic rods (301), and elastic elements arranged around the outside of the telescopic rods (301); multiple connecting frames (304) located inside the lifting frame (302), with a connecting rod (306) fixedly connected between two adjacent connecting frames (304), and a support plate (305) fixedly connected between the connecting frame (304) located at the inner corner of the lifting frame (302) and the lifting frame (302), and the frame plate (22) fixed to the connecting frame (304).

4. A heat dissipation device for a solar photovoltaic module according to claim 3, characterized in that: The elastic element is specifically a first spring (303), the upper end of the first spring (303) is fixedly installed on the bottom surface of the back plate (11), and the lower end of the first spring (303) is fixedly installed on the top surface of the lifting frame (302).

5. A heat dissipation device for a solar photovoltaic module according to claim 3, characterized in that: The extrusion assembly (70) includes: multiple airbags (701) fixedly installed at the bottom of the back plate (11), the airbags (701) being made of hollow rubber material and used to heat up and expand with the back plate (11); multiple limiting plates (702) fixedly installed at the bottom of the back plate (11); and multiple extrusion blocks (703) fixedly installed on the top surface of the lifting frame (302), with the extrusion blocks (703) corresponding vertically to the airbags (701) and the extrusion blocks (703) abutting against the airbags (701).

6. A heat dissipation device for a solar photovoltaic module according to claim 5, characterized in that: The limiting plate (702) and the heat-conducting plate (12) together surround the airbag (701) to make the airbag (701) expand downward.

7. A heat dissipation device for a solar photovoltaic module according to claim 3, characterized in that: The sealing assembly (50) includes: a blocking plate (501) which is slidably mounted on the outside of the frame plate (22), and a second spring (502) is fixedly mounted on the top surface of the blocking plate (501), and the upper end of the second spring (502) is fixedly mounted on the bottom surface of the connecting frame (304).

8. A heat dissipation device for a solar photovoltaic module according to claim 7, characterized in that: A sealing gasket (503) is bonded to the bottom surface of the blocking plate (501), and the sealing gasket (503) is made of rubber.

9. A heat dissipation device for a solar photovoltaic module according to claim 1, characterized in that: The water tank assembly (40) includes: a tank body (401), which is fixedly installed at one end of a connecting plate (41), and a cover plate (402) is detachably installed on the top of the tank body (401). Multiple perforations (42) are opened on the top surface of the cover plate (402), and the perforations (42) correspond one-to-one with the vertical position of the frame plate (22); and a connecting pipe (403), which is connected to one side of the tank body (401) and is used to supply water to the tank body (401).

10. A heat dissipation device for a solar photovoltaic module according to claim 9, characterized in that: Below the back plate (11) is a support part (60) for supporting the back plate (11) and the water tank assembly (40). The support part (60) includes: a base plate (601) disposed on the mounting surface. Multiple support blocks (602) and pillars (603) are fixedly installed on the top surface of the base plate (601). The pillars (603) are fixed to the bottom surface of the connecting plate (41), and the support blocks (602) are fixed to the bottom surface of the tank body (401).

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